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Microsoft recently enhanced its cloud-based UC service, Skype for Business Online, to include a PBX feature set and PSTN connectivity. There are other ways for enterprises and SMEs to subscribe to an entirely cloud-based business communications service with Office 365 and Skype for Business Online at its core. This report compares several of these services.


  • Of the services that provide cloud-based business telephony for Office 365, Microsoft's is the least mature and potentially most expensive offering. However, the company has the brand name, marketing muscle, and customer relationships to make its service a success.

Features and Benefits

  • Compare and contrast five services that provide cloud-based business telephony for Office 365
  • Learn how operators can variously compete against and profit from services that provide cloud-based business telephony for Office 365

Key questions answered

  • How does Office 365 with PSTN calling and Cloud PBX compare with other services that provide cloud-based business telephony for Office 365?
  • Which services deliver the best SLAs and the most complete feature sets?

Table of contents


  • Introduction
  • Download 1: Cloud Telephony Services for Office 365

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